JWT verifier for AWS Cognito running on Cloudflare Workers
npm install cloudflare-cognito-jwt-verifierjsonwebtoken.shell
npm i --save cloudflare-cognito-jwt-verifier
`
shell
yarn add cloudflare-cognito-jwt-verifier
`
Usage
javascript
import { getVerifier, JwtInvalidError } from 'cloudflare-cognito-jwt-verifier';const { verify } = getVerifier({
appClientId: COGNITO_USER_POOL_CLIENT_ID,
awsRegion: 'us-east-1',
// see auth tokens
// https://docs.aws.amazon.com/cognito/latest/developerguide/amazon-cognito-user-pools-using-tokens-with-identity-providers.html
tokenType: 'access',
userPoolId: COGNITO_USER_POOL_ID,
});
export async function verifyAuth(request: Request) {
const header = request.headers.get('Authorization');
if (!header) {
throw new JwtInvalidError();
}
return await verify(header);
}
addEventListener('fetch', (event) => {
event.passThroughOnException();
event.respondWith(async (event) => {
const auth = await verifyAuth(request);
const userId = auth?.payload.sub;
return new Response({});
});
});
``